Sea Water
Drinking Water 1
(Hard Water)
Drinking Water 2(A)
(Soft Water)
Forest Water 1
(Upper Reach)
Forest Water 2
(Middle Reach)
Forest Water3
(Lower Reach)
Sampling Point
Sub-Stances
Kobe City, Japan
Nancy City, France
Kameoka City, Japan
Kameoka City, Japan
Kameoka City, Japan
Kameoka City, Japan
TH (mg/L)
50 → 40
1468 → 100
30 → 10
10 → 0
20 → 0
50 → 20
pH
9.0 → 9.0
7.4 → 7.4
7.5 → 7.0
7.5 → 7.5
7.5 → 7.0
8.0 → 7.5
COD (mg/L)
8 → 4
5 → 0
5 → 0
0 → 0
0 → 0
4 → 4
Ca2+ (mg/L)
35 → 25
468 → 40
35 → 25
12.5 → 12.5
25 → 12.5
50 → 25
Mg2+ (mg/L)
31 → 8.2
74.5 → 30
8.2 → 4.1
0 → 0
8.2 → 4.1
8.2 → 4.1
SiO2 (mg/L)
0.5 → 0.5
8 → 5
100 → 10
15 → 5
15 → 15
15 → 15
(mg/L)
0.65 → 0.26
0.26 → 0.26
0.26 → 0.26
0.26 → 0
0.26 → 0.26
0.26 → 0.26
(mg/L)
0.33 → 0
0 → 0
0.033 → 0
0 → 0
0.033 → 0.033
0.066 → 0.033
(mg/L)
8.6 → 0
2.2 → 2.2
8.6 → 4.3
0 → 0
0.86 → 0.86
4.3 → 2.2
(mg/L)
0 → 0
0 → 0
0 → 0
0 → 0
0.15 → 0.06
0.3 → 0.15
BOD (mg/L)
3 → 0
2 → 0
3.5 → 0
1 → 0
1.5 → 0
2.5 → 0
Na+ (mg/L)
7900 → 8800
25 → 27
5.9 → 7.5
4.4 → 4.7
4.3 → 5.6
6.0 → 6.6
K+ (mg/L)
410 → 430
5.2 → 5.8
1.4 → 1.6
0.7 → 0.7
0.7 → 0.8
2.0 → 2.0